# US 2019/0169958 A1 · Systems and Methods for Controlling Fluid Flow in a Wellbore Using a Switchable Downhole Crossover Tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0169958 A1 - Document ID: US20190169958A1 - Status: Published application - Kind: A1 - Application number: 16/319,779 - Filed: 2016-09-23 - Published: 2019-06-06 - Earliest claimed: 2016-09-23 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Bo Gao; Lonnie C. Helms; Aniruddha Gadre; Yuzhu Hu; Gary Makowiecki - Web page: https://patentgrep.com/patent/US20190169958A1 ## CPC - E21B 33/14: for cementing casings into boreholes - E21B 21/10: Valve arrangements in drilling-fluid circulation systems - E21B 34/10: operated by control fluid supplied from outside the borehole - E21B 43/045: {Crossover tools} - E21B 2200/06: Sleeve valves - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A system, method, and tool for controlling fluid in a wellbore. The system comprises a tubing string locatable in the wellbore and a crossover tool for enabling reverse circulation in the wellbore. The crossover tool comprises a tool body, a sleeve, a drag block assembly, and a packer assembly. The tool body comprises a bore in fluid communication with the tubing string and a valve in the bore. The sleeve is located in the tool body and controls the valve based on the axial position of the sleeve in the tool body. The drag block assembly is coupled to the sleeve through the tool body and engages the wellbore to resist axial movement of the sleeve relative to the tool body. The packer assembly is coupled to the tool body and creates a fluid barrier in the annulus formed between the tubing string and the wellbore. ## Claims ### Claim 1 A system for controlling fluid circulation in a wellbore intersecting a subterranean earth formation, comprising: a tubing string locatable in the wellbore such that an annulus is formed between the tubing string and the wellbore; and a crossover tool, comprising: a tool body comprising a bore in fluid communication with the tubing string and a valve in the bore; a sleeve located in the tool body configured to control the valve based on the axial position of the sleeve in the tool body; a drag block assembly coupled to the sleeve through the tool body and configured to engage the wellbore and resist axial movement of the sleeve relative to the tool body; and a packer assembly coupled to the tool body and configured to create a fluid barrier in the annulus, the barrier dividing the annulus into an upper annulus and a lower annulus. ### Claim 2 (depends on 1) The system of claim 1, wherein the valve includes a pin extending through the body and engaging a groove on the sleeve so as to rotate the valve when the body is axially moved relative to the sleeve. ### Claim 3 (depends on 1) The system of claim 1, wherein the sleeve is located in an annular cavity formed in the tool body. ### Claim 4 (depends on 1) The system of claim 1, wherein the crossover tool comprises channels configured to provide flow paths through the crossover tool. ### Claim 5 (depends on 1) The system of claim 1, wherein the crossover tool further comprises a piston located between the sleeve and the tool body and comprising a port, wherein when the valve is closed, fluid is flowable through the port to expand the packer assembly and axially move the piston to allow fluid to flow into the lower annulus. ### Claim 6 (depends on 5) The system of claim 5, wherein the crossover tool includes a rupture disk configured to block a fluid flow to expand the packer assembly until a threshold pressure is reached. ### Claim 7 (depends on 4) The system of claim 4, wherein the channels comprise: a channel to divert the fluid in the internal bore above the valve, when the valve is closed, into the lower annulus; and another channel to divert the fluid in the internal bore below the valve, when the valve is closed, to the upper annulus. ### Claim 8 (depends on 1) The system of claim 1, wherein the valve is configured to close from axial movement of the tool body relative to the sleeve in a first direction and open from axial movement of the tool body in a second direction opposite the first. ### Claim 9 (depends on 1) The system of claim 1, wherein the tool body is axially moveable relative to the packer assembly when the barrier is created by the packer assembly. ### Claim 10 (depends on 1) The system of claim 1, wherein the tubing string comprises a liner, and the crossover tool is configured to allow reverse cementing of the liner in the lower annulus. ### Claim 11 A method of controlling fluid circulation in a wellbore intersecting a subterranean earth formation, wherein a tubing string is located in the wellbore and comprises a bore such that an annulus is formed between the tubing string and the wellbore, comprising: delivering fluid through the tubing string bore; axially moving a body relative to a sleeve on the tubing string in a first direction to close a valve in the bore and divert the fluid above the valve into a channel in fluid communication with a packer assembly; expanding the packer assembly with the diverted fluid to create a fluid barrier in the annulus, the barrier dividing the annulus into an upper annulus and a lower annulus; moving a piston with the diverted fluid to allow the fluid to flow from the channel to the lower annulus; returning the fluid into the tubing string bore from the lower annulus; and diverting the fluid around the closed valve through another channel to allow the returned fluid to flow from the bore below the closed valve to the upper annulus. ### Claim 12 (depends on 11) The method of claim 11, further comprising: axially moving the body relative to the sleeve in a second direction opposite to the first to open the valve in the bore; delivering the fluid into the lower annulus through a distal end of the bore; and bypassing the fluid in the lower annulus around the packer assembly to the upper annulus to circulate the fluid in a conventional circulation mode. ### Claim 13 (depends on 12) The method of claim 12, further comprising: axially moving the body relative to the sleeve in the first direction to close the valve in the bore, such that the expanded packer allows the body to move relative to the packer; and diverting the fluid in the bore to the lower annulus to circulate the fluid in a reverse circulation mode. ### Claim 14 (depends on 11) The method of claim 11, wherein expanding the packer comprises rupturing a rupture disk at a threshold pressure to allow the diverted fluid to expand the packer. ### Claim 15 (depends on 11) The method of claim 11, wherein the fluid includes at least one of a cementing fluid, a drilling fluid, a completion fluid, and a treatment fluid. ### Claim 16 (depends on 11) The method of claim 11, further comprising cementing a portion of the tubing string in the wellbore with the diverted fluid in the lower annulus. ### Claim 17 A crossover tool for controlling fluid circulation in a wellbore intersecting a subterranean earth formation, comprising: a tool body locatable in the wellbore comprising: a bore; and a valve in the bore; a sleeve located in the body configured to control the valve based on the axial position of the sleeve in the tool body; a drag block assembly coupled to the sleeve through the body and configured to engage the wellbore and resist axial movement of the sleeve relative to the tool body; and a packer assembly coupled to the tool body and configured to create a fluid barrier in the wellbore, the barrier dividing the wellbore into an upper annulus and a lower annulus. ### Claim 18 (depends on 17) The tool of claim 17, wherein the valve includes a pin extending through the body and engaging a groove on the sleeve so as to rotate the valve when the body is axially moved relative to the sleeve. ### Claim 19 (depends on 17) The tool of claim 17, further comprises a piston located between the sleeve and the tool body and comprising a port configured, wherein when the valve is closed, fluid is flowable to expand the packer assembly and axially move the piston to allow fluid to flow into the lower annulus. ### Claim 20 (depends on 17) The tool of claim 17, wherein the valve is configured to close from axial movement of the tool body relative to the sleeve in a first direction and open from axial movement of the tool body in a second direction opposite the first.